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. there is no risk, but it is a warning of what is out there. nasa attract the asteroid. they said there was no danger. an observer pick out the tiny white shape of the rock going through space. >> we have always focused people's minds on this. we have known for a while that there are things out there. this is just a very timely reminder, a reminder of why it is important for us to keep scanning the skies. >> all of this is a wake-up call. the asteroid that was much larger did pass us by. when it comes to protecting ourselves, there is not much we can do. bbc news. >> for more on today's events, i spoke to a chemist at the smithsonian in washington. what is going on out there? first of all, you have this need your read, and then you have this asteroid. >> absolutely, a very busy day. i think it is unprecedented. a really truly interesting day, to have them passing so close that it is actually visible, and then to have this media right in russia. it is a special day. >> what is causing it? we did not know any of this was coming? >> no, we were actually caught a bit by surprise. we h
Search Results 0 to 3 of about 4 (some duplicates have been removed)